In order to create truly autonomous robots that can sustain themselves without human intervention, it's necessary to first create a way for them to fuel themselves. While engineering our 'bots to plug themselves into the wall is one solution, robotics researchers envision the androids of the future consuming waste and biomass to generate power to operate. To that end, researchers at Bristol Robotics Lab in the UK have created the first synthetic gut for use in self-sustaining robots.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.